1. Welcome to the boards.
2. Please don't get all high and mighty and base the folks helping you. Forums often get people that for an infinite number of reasons do and ask very stupid things. In general this forum is good at smelling out the BS and stopping it.
3. Other than your say so, you have no means to tell you are an attorney. I myself have numerous doctoral degrees yet you would be unable to tell from my username either, so I will grant you leeway on this and assume you are legit.
4. The answer you seek is a multistep process. See below.
5. Don't bash folks due to curiosity, as it is natural and you must admit your opening bit was cryptic as have been your replies.
6. Odds are still that you are not what you say and are mis representing what you seek. Why? That is just my gut feeling trhan an attoryney would have a staff member or a tech person on staff or retainer to manage such things. But I digress. Since your info is easily obstained I will give you a solution.
Do Not jailbreak unless the iphone was already JBroken. Why? You have now altered the evidence.
Step 1.
Erase & Restore iPhone. Always good and helps establish baseline.
Step 2.
Add some random apps/songs/etc.
Step 3.
Restore phone and part way through process pull plug and allow battery to run out (this will be a while)
Step 4. Put into DFU mode and recover.
Step 5 . Part way through recovery pull plug.
You will now have failed to load enough critical files the iPod is rendered useless except with a low level format by Apple.
That said, I fail to see why a court would order the iPod undamaged yet tampered with when Apple does provide an erase & restore tool. In addition, a forenseic analysis by professionals could still pick out files in many cases short of physical damage. So if your goal is to prevent files from ever being read, you need to damage the device. This is one of my doctorates, cryptography.
So you see why people have replied the way they did to your post.
Ill intentions? By following a request from a United States District Judge? Tell you what, you PM your email address and I'll send you the court ruling once the case is over and you can see for yourself that there are no "ill intentions"
I'm starting to understand why there are so many out there who don't like Apple fanatics. Over half of the answers in this thread are indolent and unconstructive